Cylinder working tool



E. 'A. HALL El AL CYLINDER WORKING TOOL Filed Feb. 25, 1932 llllilllllllnugml' I INVENTOR5 M 61.. baa. BY NM mo u ATTORNEYfi iatentecl Aug. 15, 1933 UNITED srn'res CYLINDER WORKING TOOL Ernest A. Hall and William E. Heuer, Toledo, Ohio, assignors to The Hall Manufacturing Company, Toledo, Ohio, a Corporation of Ohio Application February 25, 1932. Serial No. 595,140

7 Claims.

This invention relates to cylinder working tools, but more particularly to cylinder hones, and an object is to produce a simple and efficient tool of this character in which the abrading elements are automatically adjusted so that they engage the cylinder walls throughout their length, thereby insuring accurate operation of the tool.

Another object of the invention is to produce a cylinder hone in which the carriers and the abrading elements are so mounted that adequate support is provided for relatively deep cutting, thereby adapting the tool for a wide range of use.

A further object is to produce a cylinder hone having the new and improved features of construction, arrangement and operation herein after described, and, for purposes of illustration, but not of limitation, the invention is shown on the accompanying drawing, in which:

Figure 1 is a vertical elevation partly in section of a cylinder hone;

Figure 2 is a vertical sectional elevation with some of the parts broken away, of the tool as shown in Figure 1;

Figure 3 is a transverse sectional view on the line 33 of Figure 1;

Figure 4 is an enlarged perspective view of the upper end of the cone-supporting sleeve; and

Figure 5 is a plan view of the sleeve adjusting member.

The illustrated embodiment of the invention comprises a cylinder hone having end plates and 11, which are held rigidly in spaced relation by rods 12. The end plates 10 and 11 are provided with a plurality of radially disposed guideways 13, in which carriers in the form of plates 14 are slidable, a slight clearance being provided between the carriers and the guideway 40 to afford limited relative movement therebetween.

As shown in Figure 3, four carriers are provided, and each is of substantially L-shaped form with the longer arm portion 15 operating in the guideway 13, and the shorter arm 16 disposed at right angles to the arm 15. Each arm 16 is grooved to receive an elongate abrading stone 1'7 which is mounted in a suitable holder having extension tabs 18 secured to the outside of the respective carrier by screws 19. Formed on the inside of each carrier are oppositely tapered surfaces 20 and 21 which engage correspondingly tapered surfaces on cones 22 and 23 respectively. The carriers are normally retained inwardly in the guides 13 by resilient rings 24 and 25 engaging respectively lugs 26 on each carrier.

The cones 22 and 23 are mounted respectively on oppositely screw threaded portions 2'7 and 28 60 on a sleeve 29. Each cone has a pin 22 extending into a longitudinal groove 23 in one of the rods 12 to hold the cones from turning.- The sleeve 29 is mounted on a shaft 30, which is rigidly secured to the plate 11 at one end by a nut 31, the opposite end extending through an opening 32 formed in the end plate 10. The outer end of the sleeve 29 is provided with slots 33, which ride over lugs 34 formed in a cupshaped adjusting sleeve 35.

It is apparent that the sleeve 29 extends freely through the opening 32, and, owing to the sliding connection with the adjusting sleeve 35, the sleeve 29 is adapted to move endwise on the shaft 30 to compensate for tilting movement of the stone carriers 14. This important feature of construction enables the carriers automatically to adjust themselves so that abrading stones 17 at all times have full contact with the cylinder wall. It is manifest that in case the abrading elements are worn more at one end than at the other, it is necessary for them to tilt in order to bring the full length of the stone into working relation to the cylinder. Obviously, from the above described construction, this can be readily obtained since the supporting sleeve 29 can move endwise a slight although sufficient extent to allow the stones 17 to be brought to such position that full cylinder wall contact can be secured.

It will be observed that the portions 15 of the stone carriers extend beyond the center of the shaft 30, thereby affording additional support for the carriers, and enabling the stones to be operated to effect relatively deep cuts in the cylinder wall. As shown in Figure 3, the arm 15 of each carrier is disposed parallel to and in rear of the arm 16 of the adjacent carrier so that a minimum of space is occupied and adequate support is provided for the abrading stones.

In screw threaded engagement with the inner end of the shaft 30 is a connector 36 of any suitable form adapted to receive a driver, it being understood that a suitable motor actuated driver may extend into the socketed end 37 for operating the tool. Abutting at one end against a sleeve portion 38 of the connector 36 on the opposite end against a wall 39 of the cup-shaped sleeve 35 is a coil spring 40, which retains the parts in the desired position.

Turning movement of the sleeve 29 simultaneously moves the cones 22 and 23 toward or away from each other, and thereby enables the position of the stones 17 to. be adjusted readily to the work. It is apparent that the slot and lug connection between the sleeve 29 and the cup-shaped member 35 is such that turning movement of the sleeve 35 imparts a movement to the cones. The adjusting sleeve 35 is conveniently provided with an outward inclined apron 41 having suitable graduations registrable with a suitable indicator mark on the end plate 10 to facilitate in accurately adjusting the position of the stones.

A cardinal feature of this invention resides in the floating mounting for the cones 22 and 23, which, as above pointed out, permits compensating movement of the carriers 14 when stones are unevenly worn. This insures full cylinder wall contract, and, consequently, enables satisfactory honing to be obtained. Another valuable characteristic is the form of the carriers, which adapts them for a wide range of service.

It is to be understood that numerous changes in details of construction, arrangement and operation may be effected without departing from the spirit of the invention, especially as defined in the appended claims.

What is claimed,

1. A cylinder working tool comprising a mounting, a plurality of tool carriers guided for radial movements in said mounting, oppositely tapered surfaces on said carriers respectively, a pair of membershaving tapered surfaces corresponding respectively to and engaging the surfaces on said carriers, a supporting sleeve for said members, means for mounting said sleeve to afford limited endwise movements thereof, a pair of oppositely screw-threaded portions on said sleeve with which said members engage respectively, and means for turning said sleeve for moving said members toward or away from each other.

2. A cylinder working tool comprising a pair of end plates, rods rigidly secured to said end plates for holding same in spaced relation, tool carriers guided in said end plates and having longitudinally spaced oppositely tapered surfaces, a driving shaft extending throughone of said end plates and rigidly secured to the other end plate, a sleeve mounted on said shaft and having endwise movement relatively thereto, a pair of oppositely screw-threaded portions on said sleeve, and oppositely tapered cones engaging said tapered surfaces respectively and mounted respectively on said oppositely screw-threaded sleeve portions.

3. A cylinder working tool comprising a pair of end plates, rods rigidly secured to said end plates for holding same in spaced relation, tool carriers guided in said end plates and having longitudinally spaced oppositely tapered surfaces, one of said end plates having a centrally disposed opening, a shaft extending through said opening, means for securing said shaft to the other end plate, a sleeve on said shaft and extending freely through said opening, the outer end of said sleeve being spaced from said other end plate, means disposed outside of the opposite end plate and'engaging said sleeve affording endwise movement thereof, longitudinally spaced right and left screw-threaded portions on said sleeve, and a pair of members mounted respectively on said screw-threaded portions and having tapered surfaces corresponding to and engaging respectively the tapered surfaces on said carriers.

4. A cylinder working toolcomprising a pair of end plates, rods rigidly secured to said end plates for holding same in spaced relation, tool carriers guided in said end plates and having longitudinally spaced oppositely tapered surfaces, one of said end plates having a centrally disposed opening, a shaft extending through said opening, means for securing said shaft to the other end plate, a sleeve mounted on said shaft and extending through said opening, a mounting disposed outside of and engaging the adjacent end plate, a connection between said mounting and sleeve permitting endwise movement of said sleeve, 9. driving connector on the outer end of said shaft, spring means between said connector and said mounting, longitudinally spaced right and left screw-threaded portions on said sleeve, and a pair of members mounted respectively on said screw-threaded portions and having tapered surfaces corresponding to and engaging respectively the tapered surfaces on said carriers.

5. A cylinder working tool comprising a pair of end plates, means for rigidly holding said plates in spaced relation, tool carrier plates of substantially L-shaped form guided for radial movement in said end plates, one of said end plates having a central opening, a shaft extending freely through said opening, means for securing the shaft to the other end plate, a sleeve mounted on said shaft and extending through said opening, a mounting disposed outside of the adjacent end plate, a connection between said sleeve and mounting affording endwise movement of said sleeve, a driving connector on the outer end of said shaft, a spring between said connector and mounting, said carrier plates ex tending inwardly beyond the center of said shaft and the long arm of one carrier plate fitting inside of the short arm of the adjacent plate, spaced right and left screw-threaded portions on said sleeve, oppositely tapered surfaces on said carrier'plates, and members on said screwthreaded portions respectively having surfaces tapered correspondingly to and in engagement with the tapered surfaces on said plates.

6. A cylinder working tool comprising a mounting, a plurality of tool carriers guided for radial movements in said mounting, oppositely tapered surfaces on said carriers respectively, a pair of members having tapered surfaces corresponding respectively to and engaging the surfaces on said carriers, a supporting sleeve for said members, means for mounting said sleeve to afford limited endwise movements thereof, positive connections between said members and sleeve enabling adjustment of the members toward and away from each other, and means for actuating said sleeve to effect such adjustment.

'7. A cylinder working tool comprising a mounting having a pair of end plates, rods rigidly secured to said end plates for holding same in spaced relation, tool carriers guided in said plates and having longitudinally spaced oppositely tapered surfaces, a pair of members having tapered surfaces corresponding respectively to and engaging the surfaces on said carriers, a driving shaft extending thru one of said end plates and rigidly secured to the other end plate, a sleeve on said shaft, positive connections between said sleeve and said members enabling adjustment of the latter relative to the carriers, and means for adjusting said sleeve.

ERNEST A. HALL. WILLIAM E. HEUER. 

